Lubricator



(N0 Model.)

C. F. BOWMAN. LUBMGATOR.

Patented June 19,1883.`

M MM@ Haven and State of Connecticut, have invented UNiTnD STATESBEIGE..

CHARLES F. BOWTMAN, OE NEWv HAVEN, CONNECTICUT.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 279,699, dated June 19`1883,

r Application filed December 4, 1882. (No model.)

To @ZZ whom t may. concern:

Be it known that I, CHARLns F. BOWMAN, a citizen of the United States ofAmerica, residing at New Haven, in the county of New certain new anduseful Improvements in Lubrieators, of which the following is aspecifi-` cation, reference being had therein to the accompanyingdrawings.

. This invention relates to improvements in lubricators adapted for usewith locomotive, stationary, or marine engines, which are operated tofeed oil intermittently to the part to be lubricated by means of adjustment to a moving part of the machinery.

The lubricator constituting my present invention, when applied tolocomotives, will operate in all respects uniformly, whether the engineis running under steam or downgrade without pressure in its cylindersand steamchests.

The lubricator is so constructed and adjusted as to force into thesteam-chest or cylinder, when applied to such part, a definite amount ofoil through the medium of a piston whose strokes may be increased ordiminished in number, as hereinafter set forth.

In the accompanying drawings, Figure l is aside elevation ofthelubricator. Fig. 2 is a vertical section on the line A B, the oil-cupbeing removed. Fig. 3 is a vertical transverse section of the same onthe line C l). Fig. 4 is a section on a horizontal plane at the line DE.

Similar letters of reference indicate similar parts in the respectivefigures.

A is the lubricator-eup, which is screwed to the case B, the part a ofwhich leads ,to the cylinder, steam-chest, or other part to belubricated. The case Bis extended so as to form one part of a space orchamber, C, the other part being formed by a separate casting, b.

Within the space C are grooves or ways c, in which slides a yoke, I),operated in a manner hereinafter described.

E is a tapering plug resting in a seat formed within the case B, inwhich plug a piston, d, is placed and adapted to have reciprocatingmovement, the piston being attached to the yoke. The yoke is givensliding movement by means of a cam, F, which is attached to or forms apart of a shaft, c, upon which it has revolution, the shaft having aratchet-wheel, f, secured thereto. The shaftf also serves as the bearingfor an oscillating arm, G, which is recessed to cover and conceal theratchet. rlhe arm carries within its recessed part the pawl or pawls g,which engage with the teeth of the ratchet. The plug E is provided withan aperture, l1, .which leads from the space below the oil-cup to thatin which the piston d works.

IVithin the screw-plug E is fitted a conical Valve, fi, the smaller endof which closes an opening which is a continuation of the space whereinthe piston moves, the valve having a stem, 1V, around which is a helicalspring, i", to cause the seating of the valve when over pressure at itsfrontend is not exerted to open it. From the back of the valve i anaperture, h', leads to the part to be lubricated. stem fi has a bearingin the screw-nut fi, by means of which the tension of the spring may beadjusted. rPhe other end of the plug E is provided with a packing-nut,which effects a tight joint around the piston.

In operation the oscillating arm G, being attached to a moving part ofthe machinery, will give, through the medium of its pawl or pawls,intermittent rotary movement to the ratchet-wheel, and through it to thecam F, which in turn imparts reciprocating movement to the piston d.When the piston is moved back so as to uncover the aperture 71, the oilfrom the cup will pass through said aperture into the piston-space infront of the piston, and on the forward movement of the latter theaperture 7L will be closed. The pressure of oil against the front of theconical valve z' will unseat it, and the oil will iind its way aroundthe valve and through the aperture h to the part to be lubricated. Asthe operation proceeds, the oil is fed intermittently and in prescribedquantities at each forward stroke of the piston. The strokes may bevaried in number by the adjust-ment of the carm.

It will be seen that no communication can be established between themain body of oil and the cylinder or steamchest, and that therefore thesaid :body of oil cannot be affected by The i IOO the pressure or minuspressure to which saidV parts of the engine -may at any time hesubjected. f

I claim as my invention- 1. In a lubricator, a case having,` inductionand eduction oil-ports and an extended inclosed chamber, combined with acam and` a.

yoke, the latter adapted to reciprocate within said chamber, and with apiston and a springvalve situated in the oil-eduction port,substantially as set forth.

2. In a lubricator, a oase having induction and eduotion oil-ports, anda plug provided With a spring-valve and a spring-tension-adjustingdevice, combined with apiston adapted to have intermittentreoiprocation, substantially as set forth.

3.*In a lubricator, the chamber C, havingA Ways c,- combined with theyoke D, cam F, shaft e, ratchet-Wheel j, recessed oscillating arm G, andpawl or pawis g, substantially as set forth.

In testimony whereof I afiX my signature in presence of two witnesses.

CHARLES F. BOWMAN. WTitnesses:

REUBEN H. BROWN, ABR. C. DEPEW:

